Effect of Ultraviolet Irradiation on the Material Properties and Acoustic Emission of a Fiber-reinforced Composite 


Vol. 22,  No. 7, pp. 1940-1949, Jul.  2021
10.1007/s12221-021-0423-1


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  Abstract

We report the effect of exposure to up to 300 h of ultraviolet (UV) irradiation on the material properties and acoustic emission (AE) of glass fiber-reinforced composite specimens. The tensile strength decreased by up to 30 % due to photodegradation, which caused extensive matrix cracking and interfacial debonding. Although a global parameter of structural health (the b-value) tended to increase with increasing exposure to UV light, it decreased after 300 h of exposure. The AE signals were more highly attenuated in the irradiated specimens, and the contribution of low-amplitude AE signals to attenuation was greater. To demonstrate the effect of attenuation, a numerical study was carried out based on frequencydependent attenuation rates calculated from the experimental results. Simulations clarified the influence of attenuation rate on the b-value of the degraded composite.

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  Cite this article

[IEEE Style]

E. o. U. I. o. t. M. P. a. A. E. o. a. F. Composite, "Effect of Ultraviolet Irradiation on the Material Properties and Acoustic Emission of a Fiber-reinforced Composite," Fibers and Polymers, vol. 22, no. 7, pp. 1940-1949, 2021. DOI: 10.1007/s12221-021-0423-1.

[ACM Style]

Effect of Ultraviolet Irradiation on the Material Properties and Acoustic Emission of a Fiber-reinforced Composite. 2021. Effect of Ultraviolet Irradiation on the Material Properties and Acoustic Emission of a Fiber-reinforced Composite. Fibers and Polymers, 22, 7, (2021), 1940-1949. DOI: 10.1007/s12221-021-0423-1.

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